1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _LINUX_ATMBR2684_H |
3 | #define _LINUX_ATMBR2684_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <linux/atm.h> |
7 | #include <linux/if.h> /* For IFNAMSIZ */ |
8 | |
9 | /* |
10 | * Type of media we're bridging (ethernet, token ring, etc) Currently only |
11 | * ethernet is supported |
12 | */ |
13 | #define BR2684_MEDIA_ETHERNET (0) /* 802.3 */ |
14 | #define BR2684_MEDIA_802_4 (1) /* 802.4 */ |
15 | #define BR2684_MEDIA_TR (2) /* 802.5 - token ring */ |
16 | #define BR2684_MEDIA_FDDI (3) |
17 | #define BR2684_MEDIA_802_6 (4) /* 802.6 */ |
18 | |
19 | /* used only at device creation: */ |
20 | #define BR2684_FLAG_ROUTED (1<<16) /* payload is routed, not bridged */ |
21 | |
22 | /* |
23 | * Is there FCS inbound on this VC? This currently isn't supported. |
24 | */ |
25 | #define BR2684_FCSIN_NO (0) |
26 | #define BR2684_FCSIN_IGNORE (1) |
27 | #define BR2684_FCSIN_VERIFY (2) |
28 | |
29 | /* |
30 | * Is there FCS outbound on this VC? This currently isn't supported. |
31 | */ |
32 | #define BR2684_FCSOUT_NO (0) |
33 | #define BR2684_FCSOUT_SENDZERO (1) |
34 | #define BR2684_FCSOUT_GENERATE (2) |
35 | |
36 | /* |
37 | * Does this VC include LLC encapsulation? |
38 | */ |
39 | #define BR2684_ENCAPS_VC (0) /* VC-mux */ |
40 | #define BR2684_ENCAPS_LLC (1) |
41 | #define BR2684_ENCAPS_AUTODETECT (2) /* Unsupported */ |
42 | |
43 | /* |
44 | * Is this VC bridged or routed? |
45 | */ |
46 | |
47 | #define BR2684_PAYLOAD_ROUTED (0) |
48 | #define BR2684_PAYLOAD_BRIDGED (1) |
49 | |
50 | /* |
51 | * This is for the ATM_NEWBACKENDIF call - these are like socket families: |
52 | * the first element of the structure is the backend number and the rest |
53 | * is per-backend specific |
54 | */ |
55 | struct atm_newif_br2684 { |
56 | atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */ |
57 | int media; /* BR2684_MEDIA_*, flags in upper bits */ |
58 | char ifname[IFNAMSIZ]; |
59 | int mtu; |
60 | }; |
61 | |
62 | /* |
63 | * This structure is used to specify a br2684 interface - either by a |
64 | * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name |
65 | */ |
66 | #define BR2684_FIND_BYNOTHING (0) |
67 | #define BR2684_FIND_BYNUM (1) |
68 | #define BR2684_FIND_BYIFNAME (2) |
69 | struct br2684_if_spec { |
70 | int method; /* BR2684_FIND_* */ |
71 | union { |
72 | char ifname[IFNAMSIZ]; |
73 | int devnum; |
74 | } spec; |
75 | }; |
76 | |
77 | /* |
78 | * This is for the ATM_SETBACKEND call - these are like socket families: |
79 | * the first element of the structure is the backend number and the rest |
80 | * is per-backend specific |
81 | */ |
82 | struct atm_backend_br2684 { |
83 | atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */ |
84 | struct br2684_if_spec ifspec; |
85 | int fcs_in; /* BR2684_FCSIN_* */ |
86 | int fcs_out; /* BR2684_FCSOUT_* */ |
87 | int fcs_auto; /* 1: fcs_{in,out} disabled if no FCS rx'ed */ |
88 | int encaps; /* BR2684_ENCAPS_* */ |
89 | int has_vpiid; /* 1: use vpn_id - Unsupported */ |
90 | __u8 vpn_id[7]; |
91 | int send_padding; /* unsupported */ |
92 | int min_size; /* we will pad smaller packets than this */ |
93 | }; |
94 | |
95 | /* |
96 | * The BR2684_SETFILT ioctl is an experimental mechanism for folks |
97 | * terminating a large number of IP-only vcc's. When netfilter allows |
98 | * efficient per-if in/out filters, this support will be removed |
99 | */ |
100 | struct br2684_filter { |
101 | __be32 prefix; /* network byte order */ |
102 | __be32 netmask; /* 0 = disable filter */ |
103 | }; |
104 | |
105 | struct br2684_filter_set { |
106 | struct br2684_if_spec ifspec; |
107 | struct br2684_filter filter; |
108 | }; |
109 | |
110 | enum br2684_payload { |
111 | p_routed = BR2684_PAYLOAD_ROUTED, |
112 | p_bridged = BR2684_PAYLOAD_BRIDGED, |
113 | }; |
114 | |
115 | #define BR2684_SETFILT _IOW( 'a', ATMIOC_BACKEND + 0, \ |
116 | struct br2684_filter_set) |
117 | |
118 | #endif /* _LINUX_ATMBR2684_H */ |
119 | |